<template>
  <div>
    <!--    头部区域-->
    <div style="height:60px;line-height: 60px;background-color: white;margin-bottom: 2px;display: flex">
      <div style="width: 300px">
        <img src="@/assets/museum.png" alt="" style="width:40px;position:relative;top:10px;left: 20px">
        <span style="margin-left: 25px;font-size: 24px">博物馆管理系统</span>
      </div>
      <div style="flex: 1;text-align: right;padding-right: 50px">
        <el-dropdown size="medium">
          <span class="el-dropdown-link" style="cursor: pointer">
            {{ admin.username }}<i class="el-icon-arrow-down el-icon--right"></i>
          </span>
          <el-dropdown-menu slot="dropdown" style="margin-top: -5px">
            <el-dropdown-item>
              <div style="width: 50px;text-align: center;" @click="logout">
                退出
              </div>
            </el-dropdown-item>
          </el-dropdown-menu>
        </el-dropdown>
      </div>
    </div>
    <!--    侧边栏和主体-->
    <div style="display: flex">
      <!--      侧边栏-->
      <div style="width:200px;min-height:calc(100vh - 62px);overflow: hidden;margin-right:2px;background-color: white">
        <!--        el-menu这部分取自element-ui的NavMenu-->
        <!--        router的路由方式在router文件夹下,其中有index.js存在-->
        <!--     route.path === '/'? $route.path : $route.path通过三元运算判断路径;default-openeds设置当前正在打开的菜单 -->
        <el-menu :default-active="$route.path" router class="el-menu-demo">
          <el-menu-item index="/">
            <i class="el-icon-star-on"></i>
            <span>首页</span>
          </el-menu-item>
          <!--          ====   会员   ====-->
          <el-submenu index="user">
            <template slot="title">
              <i class="el-icon-loading"></i>
              <span>会员管理</span>
            </template>
            <el-menu-item index="/addUser">会员添加</el-menu-item>
            <el-menu-item index="/userList">会员列表</el-menu-item>
          </el-submenu>

          <el-submenu index="admin">
            <template slot="title">
              <i class="el-icon-user"></i>
              <span>管理员管理</span>
            </template>
            <el-menu-item index="/addAdmin">管理员添加</el-menu-item>
            <el-menu-item index="/adminList">管理员列表</el-menu-item>
          </el-submenu>

          <el-submenu index="category">
            <template slot="title">
              <i class="el-icon-s-operation"></i>
              <span>图书分类管理</span>
            </template>
            <el-menu-item index="/addCategory">图书分类添加</el-menu-item>
            <el-menu-item index="/categoryList">图书分类列表</el-menu-item>
          </el-submenu>

          <el-submenu index="book">
            <template slot="title">
              <i class="el-icon-notebook-1"></i>
              <span>图书管理</span>
            </template>
            <el-menu-item index="/addBook">图书添加</el-menu-item>
            <el-menu-item index="/bookList">图书列表</el-menu-item>
          </el-submenu>

        </el-menu>
      </div>
      <!--      主体数据-->
      <div style="flex:1;background-color: white">
        <!--        router-view是主体,在HomeView中创建的“按钮”也在router-view中;router-view是子路由的存在-->
        <router-view/>
      </div>
    </div>
  </div>
</template>

<!--Layout专门用于嵌套主页的内容-->
<script>
import Cookies from 'js-cookie'
export default {
  name: 'Layout.vue',
  data(){
    return {
      admin: Cookies.get('admin') ? JSON.parse(Cookies.get('admin')) :{}
    }
  },
  methods:{
    logout(){
      //  清除浏览器用户数据
      Cookies.remove('admin')
      this.$router.push('/login')

    }
  }
}

</script>

<style scoped>

</style>